PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP Infinity 2.0 Install Guide! (6.61 - 6.60) (WORKING ON EVERY PSP) - YouTube
I tried installing 6.61 PRO C2 and infinity v2.0.3 on my psp 3001 (following the instructions on the CFW guide of this subreddit) but it just shows corrupted data when I disconnect,
How To Mod Your PSP - CFW 6.61 PRO Infinity - YouTube